<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        ul,
        li{
            list-style: none;
        }
        .card{
            position: relative;
            width: 1226px;
            height: 460px;
            /* background-color: pink; */
            margin: 0 auto;
        }
        .card img{
            width: 1226px;
            height: 460px;
        }
        .card .icon{
            position: absolute;
            left: 0;
            top: 0;
            width: 234px;
            padding: 20px 0;
            background-color: rgba(0, 0, 0, 0.2);
        }
        .card .icon .title{
            font-size: 14px;
            line-height: 42px;
            color:  #fff;
            text-indent: 30px;
            background: url(img/arrow.png) no-repeat 180px 13px;
        }
        .card .icon .title:hover{
            background-color: #ff6700;
        }
        .card .icon .title .children{
            position: absolute;
            left: 234px;
            top: 0;
            height: 460px;
            display: none;
            z-index: 5;
        }
        .card .icon .title .col-1{
            width: 992px;
        }
        .card .icon .title .col-2{
            width: 530px;
        }
        .card .icon .title .col-3{
            width: 320px;
        }
        .card .icon .title:hover .children{
            display: block;
        }
        .card .icon .title:hover .col-1{
            background-color: pink;
        }
        .card .icon .title:hover .col-2{
            background-color: yellow;
        }
        .card .icon .title:hover .col-3{
            background-color: rgb(16, 111, 235);
        }
        .card .arr1{
            position: absolute;
            left: 234px;
            top: 195.5px;
            width: 41px;
            height: 69px;
            background: url(img/arr.png) no-repeat -83px 0;
        }
        .card .arr1:hover{
            background-position: 0 0;
        }
        .card .arr2{
            position: absolute;
            right: 0;
            top: 195.5px;
            width: 41px;
            height: 69px;
            background: url(img/arr.png) no-repeat -124px 0;
        }
        .card .arr2:hover{
            background-position: -42px 0;
        }
        .card .dot{
            position: absolute;
            right: 40px;
            bottom: 50px;
        }
        .card .dot a{
            width: 6px;
            height: 6px;
            border: 2px solid hsla(0,0%,100%,.3);
            background-color: rgba(0,0,0,.4);
            float: left;
            margin: 0 4px;
            /* 正方形变成圆形 */
            border-radius: 50%;
        }
        .card .dot a:hover{
            border-color: rgba(0,0,0,.4);
            background-color: hsla(0,0%,100%,.3);
        }
    </style>
</head>
<body>
    <div class="card">
        <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/881320476078f56de8a1060cfaaad6f7.jpg?thumb=1&w=1471&h=552&f=webp&q=90" alt="">
        <ul class="icon">
            <li class="title">
                笔记本
                <div class="children col-1"></div>
            </li>
            <li class="title">
                笔记本
                <div class="children col-2"></div>
            </li>
            <li class="title">
                笔记本
                <div class="children col-3"></div>
            </li>
            <li class="title">
                笔记本
            </li>
            <li class="title">
                笔记本
            </li>
            <li class="title">
                笔记本
            </li>
            <li class="title">
                笔记本
            </li>
            <li class="title">
                笔记本
            </li>
            <li class="title">
                笔记本
            </li>
            <li class="title">
                笔记本
            </li>
            
        </ul>
        <div class="arr1"></div>
        <div class="arr2"></div>
        <div class="dot">
            <a href=""></a>
            <a href=""></a>
            <a href=""></a>
            <a href=""></a>
        </div>
    </div>
</body>
</html>